中国物理B ›› 2016, Vol. 25 ›› Issue (5): 53203-053203.doi: 10.1088/1674-1056/25/5/053203

• ATOMIC AND MOLECULAR PHYSICS • 上一篇    下一篇

Carrier-envelope phase measurement using plasmonic-field-enhanced high-order harmonic generation of H atom in few-cycle laser pulses

Wei Li(李伟), Guo-Li Wang(王国利), Xiao-Xin Zhou(周效信)   

  1. College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China
  • 收稿日期:2015-12-08 修回日期:2016-03-06 出版日期:2016-05-05 发布日期:2016-05-05
  • 通讯作者: Xiao-Xin Zhou E-mail:zhouxx@nwnu.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11264036, 11364038, and 11465016).

Carrier-envelope phase measurement using plasmonic-field-enhanced high-order harmonic generation of H atom in few-cycle laser pulses

Wei Li(李伟), Guo-Li Wang(王国利), Xiao-Xin Zhou(周效信)   

  1. College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China
  • Received:2015-12-08 Revised:2016-03-06 Online:2016-05-05 Published:2016-05-05
  • Contact: Xiao-Xin Zhou E-mail:zhouxx@nwnu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11264036, 11364038, and 11465016).

摘要: We investigate the plasmonic-field-enhanced high-order harmonic generation (HHG) of H atom driven by few-cycle laser pulses, by solving the time-dependent Schrödinger equation (TDSE). Compared with the homogeneous field, HHG spectra generated by inhomogeneous field exhibit two-plateau structure. We analyze the origin of the two plateaus by using the semiclassical trajectory method. Our results from both classical and TDSE simulations show that the cutoffs of the two plateaus are dramatically affected by the carrier-envelope phase (CEP) of laser pulse in the inhomogeneous field, even for a little longer pulse. Thus, we can determine the CEP of driving laser based on the cutoff position of HHG generated in the inhomogeneous field.

关键词: high-order harmonic generation, carrier-envelope phase, plasmonics, inhomogeneous field

Abstract: We investigate the plasmonic-field-enhanced high-order harmonic generation (HHG) of H atom driven by few-cycle laser pulses, by solving the time-dependent Schrödinger equation (TDSE). Compared with the homogeneous field, HHG spectra generated by inhomogeneous field exhibit two-plateau structure. We analyze the origin of the two plateaus by using the semiclassical trajectory method. Our results from both classical and TDSE simulations show that the cutoffs of the two plateaus are dramatically affected by the carrier-envelope phase (CEP) of laser pulse in the inhomogeneous field, even for a little longer pulse. Thus, we can determine the CEP of driving laser based on the cutoff position of HHG generated in the inhomogeneous field.

Key words: high-order harmonic generation, carrier-envelope phase, plasmonics, inhomogeneous field

中图分类号:  (Multiphoton ionization and excitation to highly excited states)

  • 32.80.Rm
42.65.Ky (Frequency conversion; harmonic generation, including higher-order harmonic generation) 42.65.Re (Ultrafast processes; optical pulse generation and pulse compression) 78.67.Bf (Nanocrystals, nanoparticles, and nanoclusters)